<html>
<head>
	<meta charset="UTF-8">
	<meta content="IE=edge" http-equiv="X-UA-Compatible">
	<meta content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no, width=device-width" name="viewport">
	<title>4743：[Usaco2016 Dec]Robotic Cow Herd</title>
	<!-- css -->
	<link href="../css/base.min.css" rel="stylesheet">
	<link href="../css/project.min.css" rel="stylesheet">
	
	<!-- favicon -->
	<!-- ... -->
</head>
<body class="page-brand">
	<header class="header header-transparent header-waterfall ui-header">
		<ul class="nav nav-list pull-left">
			<li>
				<a data-toggle="menu" href="#menu">
					<span class="icon icon-lg">menu</span>
				</a>
			</li>
		</ul>
		<a class="header-logo header-affix-hide margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">[Usaco2016 Dec]Robotic Cow Herd</a>
		<span class="header-logo header-affix margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">[Usaco2016 Dec]Robotic Cow Herd</span>
	</header>
	<nav aria-hidden="true" class="menu" id="menu" tabindex="-1">
		<div class="menu-scroll">
			<div class="menu-content">
				<a class="menu-logo" href="../index.html">BZOJ离线题库</a>
				<ul class="nav">
					<li>
						<a class="waves-attach" data-toggle="collapse" href="#problems">题目</a>
						<ul class="menu-collapse collapse in" id="problems">
							<li>
								<a class="waves-attach" href="../index.html">主页</a>
							</li>
							<li>
								<a class="waves-attach" href="../list.html">题目列表</a>
							</li>
						</ul>
					</li>
					<li>
						<a class="collapsed waves-attach" data-toggle="collapse" href="#about">关于</a>
						<ul class="menu-collapse collapse" id="about">
							<li>
								<a class="waves-attach" href="../about.html">关于此项目</a>
							</li>
						</ul>
					</li>
					
				</ul>
			</div>
		</div>
	</nav>
	<main class="content">
		<div class="content-header ui-content-header">
			<div class="container">
				<h1 class="content-heading">
                [Usaco2016 Dec]Robotic Cow Herd                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
		</div>
		<div class="container">
			<section class="content-inner margin-top-no">
				<div class="row">
					<div class="col-lg-13 col-md-13">
						<div class="card margin-bottom-no">
							<div class="card-main">
								<div class="card-inner">
									
                                <h3>题目描述</h3><p><div>Bessie is hoping to fool Farmer John by building a herd of KK realistic robotic cows (1&le;K&le;100,000)</div>
<div>.It turns out that building a robotic cow is somewhat complicated. There are N (1&le;n&le;100,000) indiv</div>
<div>idual locations on the robot into which microcontrollers must be connected (so a single microcontrol</div>
<div>ler must be connected at each location). For each of these locations, Bessie can select from a numbe</div>
<div>r of different models of microcontroller, each varying in cost.For the herd of robotic cows to look&nbsp;</div>
<div>convincing to Farmer John, no two robots should behave identically. Therefore, no two robots should&nbsp;</div>
<div>have exactly the same set of microcontrollers. For any pair of robots, there should be at least one&nbsp;</div>
<div>location at which the two robots use a different microcontroller model. It is guaranteed that there&nbsp;</div>
<div>will always be enough different microcontroller models to satisfy this constraint.Bessie wants to ma</div>
<div>ke her robotic herd as cheaply as possible. Help her determine the minimum possible cost to do this!</div>
<div>
<div>贝茜想制造K(1 &le; K &le; 100,000)个奶牛机器人来玩弄农夫约翰。一个奶牛机器人需要在N个位置分别安装一个控</div>
<div>制器。每个位置有M_i(1 &le; M_i &le; 10)种控制器可供选择，并且每种控制器都有自己价值P_{i,j}(1 &le; P_{i,j}&nbsp;</div>
<div>&le; 100,000,000)。为了使得奶牛机器人看起来像真的一样，因此贝茜要求没有两个机器人拥有完全相同的控制器</div>
<div>&mdash;&mdash;也就是说至少有一个位置选择了不同的控制器。数据保证在这种条件下至少有K种不同的奶牛。请帮助贝茜计</div>
<div>算制造K个这样的机器人的最小花费。</div>
</div>
<div></div>
<p></p></p><hr/><h3>输入格式</h3><p><div>The first line of input contains NN and KK separated by a space.</div>
<div>The following N lines contain a description of the different microcontroller models available for ea</div>
<div>ch location. The iith such line starts with MiMi (1&le;Mi&le;10), giving the number of models available&nbsp;</div>
<div>for location ii. This is followed by MiMi space separated integers Pi,jPi,j giving the costs of thes</div>
<div>e different models (1&le;Pi,j&le;100,000,000).</div>
<div></div>
<p></p></p><hr/><h3>输出格式</h3><p><div>Output a single line, giving the minimum cost to construct K robots.</div>
<div>
<div></div>
</div>
<div>
<p></p>
</div></p><hr/><h3>样例输入</h3><pre>3 10
4 1 5 3 10
3 2 3 3
5 1 3 4 6 6</pre><hr/><h3>样例输出</h3><pre>61</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>Platinum 鸣谢Firstlast提供译文</p>
								</div>
							</div>
						</div>
					</div>
				</div>
				
				
			</section>
		</div>
	</main>

	<div class="fbtn-container">
		<div class="fbtn-inner">
			<a class="fbtn fbtn-lg fbtn-brand-accent waves-attach waves-circle waves-light waves-effect" data-toggle="dropdown" aria-expanded="true"><span class="fbtn-text fbtn-text-left">Menu</span><span class="fbtn-ori icon">apps</span><span class="fbtn-sub icon">close</span></a>
			<div class="fbtn-dropup">
				<a class="fbtn fbtn-brand waves-attach waves-circle waves-light waves-effect" href="../list.html" target="_self"><span class="fbtn-text fbtn-text-left">题目列表</span><span class="icon">menu</span></a>
				<a class="fbtn fbtn-green waves-attach waves-circle waves-effect" href="../index.html" target="_self"><span class="fbtn-text fbtn-text-left">返回主页</span><span class="icon">home</span></a>
				<a class="fbtn waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/submitpage.php?id=4743" target="_blank"><span class="fbtn-text fbtn-text-left">提交代码</span><span class="icon">send</span></a>
				<a class="fbtn fbtn-orange waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/wttl/wttl.php?pid=4743" target="_blank"><span class="fbtn-text fbtn-text-left">试题讨论</span><span class="icon">chat</span></a>
				
			</div>
		</div>
	</div>

	<!-- js -->
	<script src="../js/jquery.min.js"></script>
	<script src="../js/base.min.js"></script>
	<script src="../js/project.min.js"></script>
</body>
</html>